Veterinary forceps.



v H. W. OVERBECK.

VETERINARY FORGBPS.

APPLICATION FILED SEPT. 29, 1910.

Patented Oct. 31, 1911.

HARRY WILLIAM OVERBEOK, 0F PAOLA, KANSAS.

VETERINARY FORCEPS.

Specification of Letters Patent.

Patented Oct. 31, 1911.

Application filed September 29, 1910. Serial No. 584,569.

To all whom it may concern:

Be it known that I, HARRY V. OVERBECK, a citizen of the United States, residing at Paola, in the county of Miami and State of Kansas, have invented certain new and useful Improvements in Veterinary Forceps, of which the following is a specification.

This invention relates to improvements in forceps design-ed for use in veterinary obstetrics and especially adapted for'deliv'ering pigs.

The type of construction to which the invention more particularly relates embodies contractible resilient gripping members, and the object of the invention is to simplify the construction and to minimize the cost of such a device as well as to provide at the same time for a more efficient, action.

The invention is illustrated in the accompanying drawings, wherein Figure 1 is a plan view partly in longitudinal section of the improved forceps, Fig. 2 is a side elevation thereof. Fig. 3 is a view showing a detail of the jaw construction.

Similar characters of reference designate corresponding parts throughout the several views.

The essential parts of the device are a shank 1, a jaw 2, the latter embodying the gripping members referred to, and an actuating cord 3.

The jaw 2 is constructed wholly of a continuous integral sect-ion of wire which is so fashioned that its end portions constitute a pair of normally divergent gripping arms 4. The portion of the aw between the arms 4 is constructed with regard both to cooperation with said arms and to the association of the jaw and the handle and accordingly embodies among other features what for convenience are termed attachment sections, as 5. The attachment sections 5 extend in intersecting relation from the arms 4 and at their ends adjacent said arms are provided with alining coils 6, which, in strictness form a connection between said attachment sections and said arms and provide for a proper degree of resiliency of the latter. The sections 5 at their forward ends are provided with alining superposed coils 7 from which project in opposite directions lateral extensions 8. The 'extensions 8 are parts of a gripping frame which cooperates with the arms 4, the remainder of the frame comprising a forwardly directed bow shaped section 9, the ends of which are formed with eyes 10 which constitute as well the terminals of the extensions 8.

The shank 1 consists of a section of stifi wire, or a rod, bent upon itself at the center, as at 11. The bend 11 is fitted within the coils 7 and the parallel portions of the shank extend rearwardly and preferably beneath the point of intersection of the section An attachment yoke 12 is fitted through the coils 6 and is rigidly associated with the shank l by a suitable clamp sleeve 18. The shank is in turn fitted in a hollow handle let and the terminal portions of the cord 3 are led through the bore of this handle. The cord 8 is threaded through the eyes 10 as well as through eyes 15 forming the terminals of the arms 4:, in such manner that the central portion of said cord extends between the terminal eyes 15 and is parallel to the extensions 8.

In use, the handle 14: is grasped in one hand and the terminal portions of the cord 3 are pulled by the other hand. This causes the arms 4 to contract, 2'. e. to move toward one another as well as toward the gripping frame which comprises the extensions 8 and the bow-shaped section 9. The instrument, being then in its contracted condition is readily inserted into the vagina of the animal until the fetus is reached, at which time the terminals of the cord 3 are released to allow the arms 4 to expand to their normal position. A further insertion is then made to receive an adjacent part of the fetus in the jaw-mouth defined by the extensions 8 and the portions of the cord 3 between the eyes 6 and 7. When such further insertion has been continued to the desired extent the jaw-mouth is contracted by pulling the cord terminals, the effect of which action has been explained. Thereupon the instrument is withdrawn, at the same time delivering the fetus.

The eyes 10 and 15 are so fashioned and directed as to avoid any comparatively sharp points which might inflict injury and the jaw mouth is practically of flexible nature. The extensions 8 in connection with the bow shaped section 9 provide for a highly efficient and at the same time, safe, gripping action. The jaw, it will be noted, is structurally independent of the shank and consequently its construction is simplified and the cost of production is lessened.

The shank is also of the simplest possible construction and at the same time is associated with the jaw as rigidly and securely as if made integral therewith.

The handle 14 not only affords a convenient hand grip but as well incloses the shank and constitutes a guide and keeper for the terminal portions of the cord Having fully described my invention I claim:

1. An instrument of the type set forth comprising a shank, a jaw structurally independent thereof, an actuating cord, and means for rigidly associating the jaw and the shank, the jaw being formed of a con tinuous integral section of resilient wire fashioned to afford normally divergent gripping arms and a gripping frame for cooperation with the gripping arms, said frame being formed by sections of the wire extended forwardly from the inner ends of the gripping arms and bent at their outer extremities to form a bow-shaped portion and lateral connecting extensions, the arms having terminal eyes and the frame also having eyes, the cord being threaded through the several eyes specified in a manner to provide terminal cord portions which when pulled cause the gripping arms to move toward one another and toward the frame.

2. An instrument of the type set forth comprising a shank, an actuating cord, and a jaw structurally independent of the shank; the jaw being formed of a continuous integral section of resilient wire fashioned to afford a pair of normally divergent gripping arms having terminal eyes, intersecting attachment sections projecting forwardly from the rear end of the gripping arms, coils at the junction of the attachment sections and the gripping arms, alining superposed coils at the forward ends of the attachment sections, oppositely directed lateral extensions projecting from the last named coils, a forwardly directed bow shaped section connecting the extensions and eyes at the junction of the ends of the bow shaped sections and the extensions; the shank consisting of a stiff rod bent upon itself at the center and having its central bend fitted in the coils at the forward ends of the attachment sections, the shank also having rigidly associated therewith a yoke which is fitted in the coils at the rear ends of the attachment sections; the coils being threaded through the several eyes specified in a manner to provide terminal cord portions which when pulled cause the gripping arms to move toward one another and toward the gripping frame constituted of the lateral extensions and the bow shaped section.

In testimony whereof I aiiiX my signature in presence of two witnesses.

HARRY VILLIAM OVERBECK.

Witnesses:

B. T. RILEY, L. T. BRADBURY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

